(no subject)

[strredwolf]

This I need an engineer on this idea.

If I'm getting this right off of Wikipedia (which seems to be overwritten by some idiot now), the Peltier effect is two things:

• A voltage is present in a circuit when a difference in temperature exists between two points in a circuit.
• Applying a voltage in a circuit will chill one point and heat up another point, forming a heat pump.

I'm probably wrong on the latter point, so correct me here (thus the need of an engineer).

The idea, however, is this:  Take a regular powered Peltier to chill any modern CPU (say, an AMD Semperon).  Add another Peltier to power a fan to help cool everything down.

I don't know the mathematics behind it, so I'm at a bit of a loss.  AMD however recommends that chips do not go above 45 degrees C.  My laptop is cool at 25 degrees C, so you have a base point there.

Comments

[invisiblewolf.livejournal.com]

It's an interesting idea, but I don't think the temperature difference (i.e., the cooling effect) will be sufficient. If it was, I'm pretty sure that we would have better chip designs.

-Spiritwolf.

[gentle-wolfox.livejournal.com]

The better chip designs are still in the laboratory. Synthesized crystalline-diamond substrates that are porous for forced air cooling *on the die* to eliminate large, cumbersome heat-pipe and fans on heatsink affairs that are all too common today. That baby's being built in my back yard at the moment. Other ideas I have read journals on include closed loop liquid cooling built in-die as well. I have seen working prototypes of CPUs that have little tubes of phase transitioning coolant circulating, ambient air temps more than enough to re-condense the liquid after it moves from convection currents through a small radiator. It promises faster, smaller designs with built-in cooling solutions that should last the lifetime of the product. But I bet you as soon as it's released in the public, some overclocker's gonna make it better. ;> Even seen "vapor misting" cooling solutions involving PC's with boards and CPU's hermetically sealed with sprayers blasting Flourinert around the insides like a dishwasher does dishes. There's some wild crap out there!

[gentle-wolfox.livejournal.com]

Capital idea, but not quite thoroughly thought through. To cool a Sempron or any other AMD processor down effectively requires at least a 120 watt peltier to deal with the thermal load/transfer to a heat dissipating material. 120 Watts of input power to dissipate what, 55 watts of heat generated by the die? Peltiers are inefficient at best in any situation. I have used a combination of stacked (ore than one Peltier back to back) and submerged capsule and micro-jet cooled peltier devices of my own creation. Chilling an old, shaved to the silicon through the back-plate Pentium MMX 233 to sub-zero celsius temperatures and clocking that bitch out to over 550 MHz stable was the last, good run I had with these devices before I retired them. Needed a separate 330 watt power supply to run the circulation pumps for the fluid and the triple stacked peltiers in the water capsule to obtain that. Ran her like that for about a year, then I moved. :)